src/mesa/main/samplerobj.h

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright (C) 2011  VMware, Inc.  All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included
  14  * in all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  17  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22  * OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25
  26
  27 #ifndef SAMPLEROBJ_H
  28 #define SAMPLEROBJ_H
  29
  30 #ifdef __cplusplus
  31 extern "C" {
  32 #endif
  33
  34
  35 struct dd_function_table;
  36
  37 static inline struct gl_sampler_object *
  38 _mesa_get_samplerobj(struct gl_context *ctx, GLuint unit)
  39 {
  40    if (ctx->Texture.Unit[unit].Sampler)
  41       return ctx->Texture.Unit[unit].Sampler;
  42    else if (ctx->Texture.Unit[unit]._Current)
  43       return &ctx->Texture.Unit[unit]._Current->Sampler;
  44    else
  45       return NULL;
  46 }
  47
  48
  49 /** Does the given filter state do mipmap filtering? */
  50 static inline GLboolean
  51 _mesa_is_mipmap_filter(const struct gl_sampler_object *samp)
  52 {
  53    return samp->MinFilter != GL_NEAREST && samp->MinFilter != GL_LINEAR;
  54 }
  55
  56
  57 extern void
  58 _mesa_reference_sampler_object_(struct gl_context *ctx,
  59                                 struct gl_sampler_object **ptr,
  60                                 struct gl_sampler_object *samp);
  61
  62 static inline void
  63 _mesa_reference_sampler_object(struct gl_context *ctx,
  64                                struct gl_sampler_object **ptr,
  65                                struct gl_sampler_object *samp)
  66 {
  67    if (*ptr != samp)
  68       _mesa_reference_sampler_object_(ctx, ptr, samp);
  69 }
  70
  71 extern struct gl_sampler_object *
  72 _mesa_lookup_samplerobj(struct gl_context *ctx, GLuint name);
  73
  74 extern struct gl_sampler_object *
  75 _mesa_new_sampler_object(struct gl_context *ctx, GLuint name);
  76
  77 extern void
  78 _mesa_init_sampler_object_functions(struct dd_function_table *driver);
  79
  80 void GLAPIENTRY
  81 _mesa_GenSamplers(GLsizei count, GLuint *samplers);
  82 void GLAPIENTRY
  83 _mesa_DeleteSamplers(GLsizei count, const GLuint *samplers);
  84 GLboolean GLAPIENTRY
  85 _mesa_IsSampler(GLuint sampler);
  86 void GLAPIENTRY
  87 _mesa_BindSampler(GLuint unit, GLuint sampler);
  88 void GLAPIENTRY
  89 _mesa_BindSamplers(GLuint first, GLsizei count, const GLuint *samplers);
  90 void GLAPIENTRY
  91 _mesa_SamplerParameteri(GLuint sampler, GLenum pname, GLint param);
  92 void GLAPIENTRY
  93 _mesa_SamplerParameterf(GLuint sampler, GLenum pname, GLfloat param);
  94 void GLAPIENTRY
  95 _mesa_SamplerParameteriv(GLuint sampler, GLenum pname, const GLint *params);
  96 void GLAPIENTRY
  97 _mesa_SamplerParameterfv(GLuint sampler, GLenum pname, const GLfloat *params);
  98 void GLAPIENTRY
  99 _mesa_SamplerParameterIiv(GLuint sampler, GLenum pname, const GLint *params);
 100 void GLAPIENTRY
 101 _mesa_SamplerParameterIuiv(GLuint sampler, GLenum pname, const GLuint *params);
 102 void GLAPIENTRY
 103 _mesa_GetSamplerParameteriv(GLuint sampler, GLenum pname, GLint *params);
 104 void GLAPIENTRY
 105 _mesa_GetSamplerParameterfv(GLuint sampler, GLenum pname, GLfloat *params);
 106 void GLAPIENTRY
 107 _mesa_GetSamplerParameterIiv(GLuint sampler, GLenum pname, GLint *params);
 108 void GLAPIENTRY
 109 _mesa_GetSamplerParameterIuiv(GLuint sampler, GLenum pname, GLuint *params);
 110
 111 #ifdef __cplusplus
 112 }
 113 #endif
 114
 115 #endif /* SAMPLEROBJ_H */